74ACT1284 Datasheet | Fairchild Semiconductor

.. 74ACT1284 IEEE 1284 Transceiver June 1996 Revised November 2000 74ACT1284 IEEE 1284 Transceiver General Description The 74ACT1284 contains four non-inverting bidirectional buffers and three non-inverting buffers with open Drain outputs and high drive capability on the B Ports. It is intended to provide a standard signaling method for a bi-direction parallel peripheral in an Extended Capabilities Port mode (ECP). The HD (active HIGH) input pin enables the B Ports to switch from open Drain to a high drive totem pole output, capable of sourcing 14 mA on all seven buffers. The DIR input determines the direction of data flow on the bidirectional buffers. DIR (active HIGH)...